/**
 * @author jeremy.li
 * @date 2020/11/30
 * @description 停車場
 */
public class SemaphoreTest implements Runnable {

    static Semaphore semaphore = new Semaphore(5);

    public static void main(String[] args) throws InterruptedException {
        for (int i = 0; i < 20; i++) {
            SemaphoreTest semaphoreTest = new SemaphoreTest();
            Thread thread = new Thread(semaphoreTest, i + " 號司機");

            thread.start();
        }
    }

    @Override
    public void run() {
        try {
            semaphore.acquire();
            Thread.sleep(2000);
            System.out.println(Thread.currentThread().getName() + ",搶到了車位");
            semaphore.release();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }
}